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Finding the Fourth Proportional to 494,560.80, 741,668.40 and 257,824.80

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Solution

The fourth proportional to 494,560.80, 741,668.40 and 257,824.80 is: 386,647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,560.80 : 741,668.40 = 257,824.80 : x
  2. Step 2: Convert to fraction form
    494,560.80/741,668.40 = 257,824.80/x
  3. Step 3: Cross multiply
    494,560.80x = 741,668.40 × 257,824.80
  4. Step 4: Simplify right side
    494,560.80x = 191,220,506,896.32
  5. Step 5: Solve for x
    x = 191,220,506,896.32/494,560.80
  6. Step 6: Final answer
    x = 386,647.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.